CN110160372B - Cooling device of indirect cooling tower, circulating water cooling assembly and power generation system - Google Patents
Cooling device of indirect cooling tower, circulating water cooling assembly and power generation system Download PDFInfo
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- CN110160372B CN110160372B CN201910420777.6A CN201910420777A CN110160372B CN 110160372 B CN110160372 B CN 110160372B CN 201910420777 A CN201910420777 A CN 201910420777A CN 110160372 B CN110160372 B CN 110160372B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 228
- 238000001816 cooling Methods 0.000 title claims abstract description 134
- 238000010248 power generation Methods 0.000 title claims abstract description 16
- 230000017525 heat dissipation Effects 0.000 claims abstract description 18
- 230000000087 stabilizing effect Effects 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 7
- 238000009825 accumulation Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
- F28C1/14—Direct-contact trickle coolers, e.g. cooling towers comprising also a non-direct contact heat exchange
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F25/00—Component parts of trickle coolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F25/00—Component parts of trickle coolers
- F28F25/02—Component parts of trickle coolers for distributing, circulating, and accumulating liquid
- F28F25/04—Distributing or accumulator troughs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- F28F27/003—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus specially adapted for cooling towers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to the field of power generation equipment, and discloses a heat dissipating device of an indirect cooling tower, a circulating water cooling component and a power generating system. According to the cooling tower heat dissipation device, the circulating water cooling component and the power generation system, the heat exchange area of the heat dissipation device and the air extends along the vertical direction, so that a longer heat exchange flow can be formed, the effective heat exchange area is increased, the flow resistance of the air along the vertical direction is smaller, a better air dynamic field can be formed for heat dissipation, the cooling efficiency is remarkably improved, and the cooling tower heat dissipation device is beneficial to reducing the occupied area of the cooling tower and the production cost.
Description
Technical Field
The invention relates to the field of power generation equipment, in particular to a heat dissipation device of an indirect cooling tower, a circulating water cooling component and a power generation system.
Background
The cooling tower is one of main equipment of a cold end system of a power plant, is mainly used for maintaining exhaust back pressure of a steam turbine and enabling a thermodynamic system to realize Rankine cycle, so that the operation quality of the cooling tower directly influences the thermal economy of a unit and the power plant. The indirect air cooling tower (indirect cooling tower) has better heat exchange effect than the direct air cooling tower and is less affected by seasons than the direct air cooling tower. The turbo generator set in the traditional power generation system is generally arranged at a low level, the backwater discharged from the condenser enters the indirect cooling tower at a lower position (usually enters the indirect cooling tower from 0m and is sent to a position with a height of 30 m), so that the arrangement position of the heat dissipating device in the indirect cooling tower is lower, the arrangement space is limited, the heat dissipating device is generally arranged at the bottom of the cooling tower around the circumferential direction of the indirect cooling tower, the heat dissipating device mainly exchanges heat with the air which transversely moves (horizontally) and enters the cooling tower from the side surface of the cooling tower, the heat exchanging area extends horizontally, the effective heat exchanging area is smaller, the flow resistance of the air transversely moves is larger, the formation of a better air dynamic field is unfavorable, the cooling efficiency is not ideal, the occupied area of the indirect cooling tower is larger, and the reduction of engineering cost is unfavorable.
Accordingly, there is a need to design a cooling device of an indirect cooling tower capable of improving cooling efficiency and reducing the occupied area of the indirect cooling tower.
Disclosure of Invention
The invention aims to solve the problems of unsatisfactory cooling efficiency and large occupied area of an indirect cooling tower in the prior art, and provides a heat dissipation device of the indirect cooling tower, which can improve the cooling efficiency and reduce the occupied area of the indirect cooling tower.
It is a further object of the present invention to provide a circulating water cooled assembly including the above-described heat sink.
It is a further object of the present invention to provide a power generation system comprising the above circulating water cooling module.
In order to achieve the above object, according to an aspect of the present invention, there is provided a heat dissipating device for an indirect cooling tower, the heat dissipating device comprising a water collecting member and an annular pipe arranged at intervals in a vertical direction, and a plurality of heat dissipating pipes having both ends connected to the water collecting member and the annular pipe, respectively, the plurality of heat dissipating pipes being arranged in a tapered structure circumferentially arranged at intervals on the annular pipe and converging toward the water collecting member, a water inlet being provided at a top end of the heat dissipating device, and a water outlet being provided at a bottom end of the heat dissipating device.
In the technical scheme, after the condenser is arranged along with the high position of the steam turbine, backwater discharged from the condenser can enter the cooling tower from a high position, the arrangement space of the heat dissipating device in the cooling tower is larger, the water collecting part and the annular pipeline are arranged at intervals along the vertical direction, and the plurality of heat dissipating tubes with two ends respectively connected with the water collecting part and the annular pipeline are arranged at intervals along the circumferential direction of the annular pipeline and face the conical structure gathered towards the water collecting part, so that the heat dissipating device and the heat exchanging area of air extend along the vertical direction, a longer heat exchanging flow can be formed, the effective heat exchanging area is increased, the flow resistance of the air along the vertical direction is smaller, a better air dynamic field can be formed for dissipating heat, the cooling efficiency is remarkably improved, the occupied area of the cooling tower is reduced, and the production cost is reduced.
Preferably, the annular pipeline is arranged below the water collecting component, the water inlet is arranged on the water collecting component, and the water outlet is arranged on the annular pipeline; or the annular pipeline is arranged above the water collecting component, the water inlet is arranged on the annular pipeline, and the water outlet is arranged on the water collecting component.
Preferably, the annular duct includes an upper annular duct disposed above the water collecting member and a lower annular duct disposed below the water collecting member, the radiating pipe includes a plurality of upper radiating pipes disposed between the upper annular duct and the water collecting member and a plurality of lower radiating pipes disposed between the water collecting member and the lower annular duct and having a tapered structure, the water inlet is disposed on the upper annular duct, and the water outlet is disposed on the lower annular duct.
Preferably, the water collecting part comprises a closed water tank; or the water collecting component comprises an annular pipe body, and a wind shield or a chimney for closing the circular opening is arranged in the circular opening surrounded by the annular pipe body.
Preferably, the annular pipeline comprises an upper annular pipeline and a lower annular pipeline, a plurality of radiating pipes are arranged between the upper annular pipeline and the lower annular pipeline in a crossing mode to form two conical structures, the water collecting parts are formed at the crossing positions of the radiating pipes, the water inlet is formed in the upper annular pipeline, and the water outlet is formed in the lower annular pipeline.
Preferably, the annular duct comprises an outer annular duct and an inner annular duct, the radiating pipes comprise a plurality of outer radiating pipes and a plurality of inner radiating pipes, the outer radiating pipes are arranged to be arranged at intervals circumferentially on the outer annular duct and towards the outer conical structures gathered by the water collecting components, the inner radiating pipes are arranged to be arranged at intervals circumferentially on the inner annular duct and towards the inner conical structures gathered by the water collecting components, and the inner conical structures are located inside the outer conical structures.
The invention provides a circulating water cooling assembly which comprises a cooling tower, a circulating water pipeline, a circulating water pump, a condenser and a heat dissipating device of the cooling tower, wherein the circulating water pump, the condenser and the heat dissipating device of the cooling tower are sequentially connected through the circulating water pipeline, the heat dissipating device is positioned in the cooling tower, the circulating water pipeline is respectively connected with the water inlet and the water outlet, and a water outlet of the condenser is arranged at the same height as the water inlet of the heat dissipating device.
Preferably, the outer periphery of the annular pipeline is arranged close to the inner wall of the indirect cooling tower; the circulating water cooling module comprises an elastic sealing element for sealing a gap between the periphery of the annular pipeline and the inner wall of the indirect cooling tower; and/or the circulating water cooling assembly comprises a pressure stabilizing water tank connected with the circulating water pipeline through a pipeline, and a pressure stabilizing water pump is arranged on the pipeline.
Preferably, the circulating water cooling module comprises: the exhaust valve is communicated with the highest water level in the circulating water pipeline; the exhaust valve is connected with the circulating water pipeline through a vertical pipeline, and a transparent liquid level meter is arranged on the vertical pipeline; and/or an open water tank, wherein the open water tank is connected with the circulating water pipeline, the water level in the open water tank is not lower than the highest water level in the circulating water pipeline, and a liquid level meter is arranged on the open water tank.
The third aspect of the invention provides a power generation system, which comprises a boiler, a steam turbine connected with the boiler through a steam pipeline and the circulating water cooling assembly, wherein the condenser is connected with the steam turbine; the first connector of the steam turbine connected with the steam pipeline and the second connector of the boiler connected with the steam pipeline are arranged at equal heights, and the condenser is arranged close to the steam turbine.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
FIG. 1 is a schematic view of a prior art circulating water cooling module;
FIG. 2 is a schematic view of the structure of a circulating water cooling module according to a preferred embodiment of the present invention;
Fig. 3 is a schematic view of another circulating water cooling module according to a preferred embodiment of the invention.
Description of the reference numerals
1. Annular pipeline of water collecting component 2
21. Upper annular duct 22 lower annular duct
3. Upper part radiating pipe of radiating pipe 31
32. Inter-cooling tower with lower radiating pipe 10
20. Circulating water pipe 30 circulating water pump
40. Heat dissipating device of condenser 50
60. Pressure stabilizing water pump for pressure stabilizing water tank 70
801. Open water tank with exhaust valve 802
10 'Cooling tower 50' radiator
Detailed Description
The following describes specific embodiments of the present invention in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
In the present invention, unless otherwise specified, terms such as "upper, lower, left, and right" and "upper, lower, left, and right" are used generically to refer to the upper, lower, left, and right illustrated in the drawings; "inner and outer" means the inner and outer relative to the contour of the respective component itself.
As shown in fig. 1, in the existing circulating water cooling module using an indirect air cooling tower, backwater discharged from a condenser 40 generally enters a cooling tower 10' from 0m, the arrangement height of a radiator 50' in the cooling tower 10' is low, generally about 30m, the arrangement space of the radiator 50' is limited, generally the radiator 50' is arranged at the bottom of the cooling tower 10' around the circumferential direction of the cooling tower 10', the radiator 50' mainly exchanges heat with air which transversely moves (horizontally) and enters the cooling tower from the side surface of the cooling tower 10', a heat exchange area extends horizontally, the effective heat exchange area is small, the flow resistance of the air transversely moves is large, the formation of a better air dynamic field for heat dissipation is unfavorable, the cooling efficiency is not ideal, the occupied area of the indirect air cooling tower is large, and the reduction of the production cost is unfavorable.
Based on the problems of unsatisfactory cooling efficiency and large occupied area of the indirect cooling tower in the technology, the invention provides a cooling device of the indirect cooling tower and a power generation system comprising the cooling device, and the cooling device and the power generation system are described in detail below through specific embodiments and with reference to corresponding drawings.
The invention provides a heat dissipation device of an indirect cooling tower, which comprises a water collecting component 1, an annular pipeline 2 and a plurality of heat dissipation pipes 3, wherein the water collecting component 1 and the annular pipeline 2 are arranged at intervals along the vertical direction, the two ends of the heat dissipation pipes 3 are respectively connected with the water collecting component 1 and the annular pipeline 2, the plurality of heat dissipation pipes 3 are arranged on the annular pipeline 2 at intervals along the circumferential direction and are in a conical structure which gathers towards the water collecting component 1, the top end of the heat dissipation device is provided with a water inlet, and the bottom end of the heat dissipation device is provided with a water outlet.
In order to increase the contact area between the radiating pipe 3 and the air, the radiating pipe 3 may have a sheet shape. Further, in order to reduce the flow resistance, the heat dissipating tube 3 may be linear, and in order to extend the heat exchanging process, the heat dissipating tube 3 may be curved, so as to further increase the flow of the circulating water and improve the heat dissipating efficiency, and the structure formed at this time is an approximately conical structure, but still falls within the protection scope of the present invention.
In order to make the circulating water more evenly distributed in the heat radiating device, the water collecting member 1 is provided at the central axis of the annular pipe 2. In addition, the circulating water generally flows from the top of the heat dissipating device to the bottom of the heat dissipating device, so that the water inlet is disposed at the top of the heat dissipating device and the water outlet is disposed at the bottom of the heat dissipating device.
In the above technical scheme, when the condenser is arranged along with the high-order of the steam turbine, the backwater discharged from the condenser can enter the cooling tower from a high level, the arrangement space of the heat dissipating device in the cooling tower is larger, through arranging the water collecting component 1 and the annular pipeline 2 at intervals along the vertical direction, and the plurality of heat dissipating tubes 3 with two ends respectively connected with the water collecting component 1 and the annular pipeline 2 are arranged to be conical structures which are arranged at intervals along the circumferential direction of the annular pipeline 2 and gather towards the water collecting component 1, so that the heat exchanging area of the heat dissipating device and the air extends along the vertical direction, a longer heat exchanging flow can be formed, the effective heat exchanging area is increased, the flow resistance of the air along the vertical direction is smaller, and a better air dynamic field can be formed for dissipating heat, thereby remarkably improving the cooling efficiency, and being beneficial to reducing the occupied area of the cooling tower and reducing the production cost.
Taking 600MW grade unit as an example, in the circulating water cooling component of traditional low-order arrangement as shown in fig. 1, backwater enters the cooling tower from 0m and the arrangement height of the radiator 50' is about 30m, the arrangement area of the radiator of the traditional inter-unit cooling tower is 1.7 ten thousand square meters, and in the circulating water cooling component of high-order arrangement of the condenser as shown in fig. 2, backwater with the height of 50 m can be at least realized, so that the arrangement height of the radiator can be set downwards from 50 m, at this time, the arrangement area of the radiator can reach at least 2.5 ten thousand square meters, the arrangement space of the radiator is greatly improved, the effective heat exchange area of the radiator is further improved, and the improvement of cooling efficiency and the occupation area of the inter-cooling tower are facilitated to be reduced.
In addition, the relative positions of the water collecting member 1 and the annular duct 2, which are arranged at intervals in the vertical direction, may have, but are not limited to, the following four embodiments:
First embodiment
As shown in fig. 2, the annular pipe 2 is arranged below the water collecting part 1, the water inlet is arranged on the water collecting part 1, and the water outlet is arranged on the annular pipe 2. At this time, the plurality of radiating pipes 3 are arranged in a forward conical shape, and air entering from the bottom of the indirect cooling tower can form countercurrent heat exchange with the radiating pipes 3 when flowing upwards in the indirect cooling tower, so that the heat exchange effect is good, and the cooling effect is better.
Second embodiment
The annular pipeline 2 is arranged above the water collecting component 1, the water inlet is arranged on the annular pipeline 2, and the water outlet is arranged on the water collecting component 1. At this time, the plurality of radiating pipes 3 are arranged in an inverted cone shape, and when air entering from the bottom of the indirect cooling tower flows upwards in the indirect cooling tower, downstream heat exchange can be formed between the air and the radiating pipes 3.
Third embodiment
As shown in fig. 3, the annular pipe 2 includes an upper annular pipe 21 disposed above the water collecting member 1 and a lower annular pipe 22 disposed below the water collecting member 1, the radiating pipe 3 includes a plurality of upper radiating pipes 31 having a tapered structure disposed between the upper annular pipe 21 and the water collecting member 1 and a plurality of lower radiating pipes 32 having a tapered structure disposed between the water collecting member 1 and the lower annular pipe 22, the water inlet is disposed on the upper annular pipe 21, and the water outlet is disposed on the lower annular pipe 22. At this time, the plurality of upper radiating pipes 31 form an inverted cone structure, the plurality of lower radiating pipes 32 form a forward cone structure, the twice heat convection is realized in the air rising process, the heat exchange flow is improved, the cooling capacity of the air is greatly excavated, and the temperature requirement of the unit on circulating water can be ensured. In use, circulating water enters the upper annular pipe 21 from the water inlet, passes through the upper radiating pipe 31 and the lower radiating pipe 32, flows to the lower annular pipe 22, and flows out from the water outlet. In addition, a reasonable structure may be provided in this embodiment, so that the heat sink can be switched to the structure in the first embodiment or the second embodiment as needed.
In the above three embodiments, the water collecting member 1 may comprise a closed water tank, or the water collecting member may comprise an annular pipe body, and a wind deflector or chimney for closing the circular opening is provided in the circular opening surrounded by the annular pipe body.
Fourth embodiment
As shown in fig. 3, the annular pipe 2 includes an upper annular pipe 21 and a lower annular pipe 22, a plurality of radiating pipes 3 are arranged to form two conical structures in a crossing manner between the upper annular pipe 21 and the lower annular pipe 22, the water collecting member 1 is formed at the crossing position of the plurality of radiating pipes 3, the water inlet is arranged on the upper annular pipe 21, and the water outlet is arranged on the lower annular pipe 22. At this time, the water collecting component 1 is a gathering part where the plurality of radiating pipes 3 are arranged in a crossed manner, a circle can be supposed to be formed in the center when the radiating pipes 3 are arranged, each radiating pipe 3 is arranged tangentially to the circle to form a big-small two-cone structure (because the cooling tower is generally of a hyperbolic structure, the upper diameter of the cooling tower is smaller than that of the cooling tower, and therefore the upper cone structure is smaller than that of the lower cone structure), the water collecting component 1 is a shared top of the big-small two-cone structure, and finally the circle is sealed, for example, by using the wind shield mentioned above, or a chimney can be arranged at the circle to seal the circle so as to prevent air from flowing out and enable the air to pass through the radiating pipes 3 as much as possible.
Wherein, preferably, the annular duct 2 comprises an outer annular duct and an inner annular duct, the radiating pipe 3 comprises a plurality of outer radiating pipes and a plurality of inner radiating pipes, the outer radiating pipes are arranged to be arranged at intervals circumferentially on the outer annular duct and towards the outer conical structure gathered by the water collecting component 1, the inner radiating pipes are arranged to be arranged at intervals circumferentially on the inner annular duct and towards the inner conical structure gathered by the water collecting component 1, and the inner conical structure is positioned inside the outer conical structure. The arrangement area of the radiating pipe 3 can be further increased, the radiating effect can be further enhanced, and the cooling efficiency can be improved.
The second aspect of the present invention provides a circulating water cooling assembly, as shown in fig. 2 and 3, the circulating water cooling assembly includes an indirect cooling tower 10, a circulating water pipe 20, a circulating water pump 30, a condenser 40 and a heat dissipating device 50 of the indirect cooling tower, which are sequentially connected through the circulating water pipe 20, the heat dissipating device 50 is located inside the indirect cooling tower 10, the circulating water pipe 20 is respectively connected with the water inlet and the water outlet, and a water outlet of the condenser 40 is arranged at the same height as the water inlet of the heat dissipating device 50. After the whole turbo generator set is arranged at a high position, the position of the condenser 40 is also improved, the water outlet of the condenser 40 is arranged at the same height as the water inlet of the heat dissipating device 50, the backwater potential energy can be fully utilized, and when the backwater height of circulating water reaches more than 50 meters, the cavitation allowance (generally within 10 meters) of the traditional circulating water pump is completely satisfied, so that the type selection of the circulating water pump 30 after the condenser is arranged at a high position can be deeply optimized, a deep burying type is not needed any more, a horizontal pump can be adopted, and the horizontal pump has obvious advantages compared with a long shaft vertical pump in the aspects of a shafting supporting mode and the length, is convenient to patrol and maintain, and meanwhile, the reliability is better. The rotation speed of the traditional circulating water pump is generally below 400rpm, and the rotation speed design of the circulating water pump can be further improved under the return water height, so that the type of the circulating water pump can be flexibly selected from the aspects of efficiency, arrangement, investment and the like.
Since most objects have a phenomenon of thermal expansion and contraction, and considering that there is a small resistance at a gap between the heat sink 50 and the cooling tower 10, air may pass through the gap to affect the cooling effect, it is preferable that the outer circumference of the annular duct 2 is disposed close to the inner wall of the cooling tower 10, and the circulating water cooling module includes an elastic seal to seal the gap between the outer circumference of the annular duct 2 and the inner wall of the cooling tower 10.
To supplement the water loss, the flow rate in the circulating water pipe 20 is required to stabilize the pressure and ensure the normal operation, and preferably, the circulating water cooling module includes a pressure stabilizing water tank 60 connected to the circulating water pipe through a pipe on which a pressure stabilizing water pump 70 is provided. And, the water volume in the pressure stabilizing water tank 60 is required to meet the maximum water supplementing volume requirement for at least 24 hours. Due to the arrangement of the pressure stabilizing water pump 70, the lift of the circulating water pump 30 is not required to be increased correspondingly after the condenser 40 is arranged at a high position, only the increase of the on-way resistance of the system is needed to be overcome, the backwater potential energy is effectively utilized, and the power of the circulating water pump 30 is not required to be increased greatly.
In order to ensure that the circulating water cooling equipment is in a state of being full of cooling water without air accumulation, preferably, the circulating water cooling assembly comprises an exhaust valve 801, the exhaust valve 801 is communicated with the highest water level in the circulating water pipeline 20, so that the air in the equipment can be immediately released into the atmosphere to ensure the cooling efficiency, and in order to conveniently observe whether the air accumulation exists in the equipment, the exhaust valve 801 and the circulating water pipeline 20 are connected through a vertical pipeline, and a transparent liquid level meter is arranged on the vertical pipeline. Alternatively, the circulating water cooling module may include an open water tank 802, the open water tank 802 is connected to the circulating water pipe 20, the water level in the open water tank 802 is not lower than the highest water level in the circulating water pipe 20, and a level gauge is provided on the open water tank 802, so as to know the level of the water in time. Wherein, the level gauge can set up in the inside of open water tank 802, alternatively, the level gauge sets up in the outside of open water tank 802, for example the level gauge that sets up outside open water tank 802 communicates with open water tank 802 through the first horizontal pipeline that sets up by supreme interval down along vertical direction and the air of second horizontal pipeline, the first horizontal pipeline that sets up in lower position and the water in open water tank 802 and the water in the level gauge all communicate, the air of the upper position and the air of the upper side of the surface of water in open water tank 802 and the air of the upper side of the surface of water in the level gauge. At this time, the open water tank 802 can be used for discharging air in the circulating water pipe 20, and whether the pressure stabilizing water pump 70 needs to work or not can be judged by observing the liquid level in the open water tank 802 so as to supplement water in the pressure stabilizing water tank 60 to the circulating water pipe 20, so that the pressure stabilizing water pump 70 does not need to continuously run to control the pressure in the pipe, namely, the pressure stabilizing water pump 70 can intermittently run, the energy consumption of the pressure stabilizing water pump 70 is reduced, the system performance is optimized, and the cost is reduced.
A third aspect of the present application provides a power generation system, the power generation system comprising a boiler, a steam turbine connected to the boiler through a steam pipe, and the circulating water cooling module, the condenser 40 being connected to the steam turbine; the first interface of the steam turbine connected with the steam pipeline and the second interface of the boiler connected with the steam pipeline are arranged at equal heights, and the condenser 40 is arranged close to the steam turbine. In the application, after the steam turbine is arranged at a high position, the condenser is not limited to a mode of directly cooling air, but is a wet condenser, so that the condenser is less influenced by environment (such as temperature, wind direction, wind speed and the like), the performance is more stable, and the economy and the safety of the operation of the power generation system are improved.
Since the circulating water cooling module and the power generation system include the cooling device 50 of the indirect cooling tower as described above, there are all or at least some of the technical effects described above with respect to the cooling device 50 of the indirect cooling tower, and the details and effects of more specific technical aspects can be referred to above.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, a number of simple variants of the technical solution of the invention are possible, including combinations of individual specific technical features in any suitable way. The various possible combinations of the invention are not described in detail in order to avoid unnecessary repetition. Such simple variations and combinations are likewise to be regarded as being within the scope of the present disclosure.
Claims (5)
1. The heat dissipation device of the indirect cooling tower is characterized by comprising a water collecting component (1) and an annular pipeline (2) which are arranged at intervals along the vertical direction, and a plurality of heat dissipation pipes (3) with two ends respectively connected with the water collecting component (1) and the annular pipeline (2), wherein the plurality of heat dissipation pipes (3) are arranged on the annular pipeline (2) at intervals along the circumferential direction and are in a conical structure which is gathered towards the water collecting component (1), the top end of the heat dissipation device is provided with a water inlet, and the bottom end of the heat dissipation device is provided with a water outlet;
the annular pipeline (2) comprises an upper annular pipeline (21) and a lower annular pipeline (22), a plurality of radiating pipes (3) are arranged between the upper annular pipeline (21) and the lower annular pipeline (22) in a crossing mode to form two conical structures, water collecting parts (1) are formed at the crossing positions of the radiating pipes (3), the water inlet is formed in the upper annular pipeline (21), and the water outlet is formed in the lower annular pipeline (22);
the annular pipeline (2) comprises an outer annular pipeline and an inner annular pipeline, the radiating pipes (3) comprise a plurality of outer radiating pipes and a plurality of inner radiating pipes, the outer radiating pipes are arranged to be arranged at intervals on the outer annular pipeline and face the outer conical structures gathered by the water collecting components (1), the inner radiating pipes are arranged to be arranged at intervals on the inner annular pipeline and face the inner conical structures gathered by the water collecting components (1), and the inner conical structures are located on the inner sides of the outer conical structures.
2. The utility model provides a circulating water cooling subassembly, its characterized in that, circulating water cooling subassembly includes indirect cooling tower (10), circulating water pipeline (20), through circulating water pump (30), condenser (40) that circulating water pipeline (20) connect gradually and heat abstractor (50) of indirect cooling tower according to claim 1, heat abstractor (50) are located indirect cooling tower (10) is inside, circulating water pipeline (20) respectively with the water inlet with the delivery port is connected, the outlet of condenser (40) with the water inlet equiheight setting of heat abstractor (50).
3. The circulating water cooling module of claim 2, wherein:
The periphery of the annular pipeline (2) is close to the inner wall of the indirect cooling tower (10); the circulating water cooling module comprises an elastic sealing member for sealing a gap between the outer periphery of the annular pipe (2) and the inner wall of the indirect cooling tower (10); and/or
The circulating water cooling assembly comprises a pressure stabilizing water tank (60) connected with the circulating water pipeline through a pipeline, and a pressure stabilizing water pump (70) is arranged on the pipeline.
4. A circulating water cooling module according to claim 2 or claim 3, wherein the circulating water cooling module comprises:
An exhaust valve (801), wherein the exhaust valve (801) is communicated with the highest water level in the circulating water pipeline (20); the exhaust valve (801) is connected with the circulating water pipeline (20) through a vertical pipeline, and a transparent liquid level meter is arranged on the vertical pipeline; and/or
The open water tank (802), open water tank (802) with circulating water pipe (20) link to each other just the water level in open water tank (802) is not less than the highest water level in circulating water pipe (20), be provided with the level gauge on open water tank (802).
5. A power generation system, characterized in that it comprises a boiler, a steam turbine connected to the boiler by means of a steam duct and a circulating water cooling module according to any one of claims 2-4, the condenser (40) being connected to the steam turbine; the first connector of the steam turbine connected with the steam pipeline and the second connector of the boiler connected with the steam pipeline are arranged at equal heights, and the condenser (40) is arranged close to the steam turbine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910420777.6A CN110160372B (en) | 2019-05-20 | 2019-05-20 | Cooling device of indirect cooling tower, circulating water cooling assembly and power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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